Animation Nodes is cool but, as hvanderwegen indicates, not as intuitive as Mograph. Also, last I tried, I had issues trying to install it with the latest version of Blender (this may have been fixed now). The power and ease of Mograph, as well as my personal preference for the C4D interface AND the May the Forth 30% of sales is why I bought Broadcast.
Funny thing is last time I dove into Blender and then went back to C4D, there were some Blender UI things I missed. Regarding Blender's UI, there is an initiative for version 2.8 called Blender 101 which may ease adoption for some folks.
Blender is awesome and I keep my eyes open for ways to leverage developments related to it. I recently bought a Blender plugin called ToonKit and, using Cycles 4D, am playing with the .osl scripts that came with ToonKit.